23231205031 has 4 divisors (see below), whose sum is σ = 23461217064. Its totient is φ = 23001193000.

The previous prime is 23231205013. The next prime is 23231205043. The reversal of 23231205031 is 13050213232.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 23231205031 - 2²¹ = 23229107879 is a prime.

It is a super-2 number, since 2×23231205031² (a number of 22 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 23231204993 and 23231205011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23231202031) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 115005865 + ... + 115006066.

It is an arithmetic number, because the mean of its divisors is an integer number (5865304266).

Almost surely, 2^23231205031 is an apocalyptic number.

23231205031 is a deficient number, since it is larger than the sum of its proper divisors (230012033).

23231205031 is a wasteful number, since it uses less digits than its factorization.

23231205031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 230012032.

The product of its (nonzero) digits is 1080, while the sum is 22.

Adding to 23231205031 its reverse (13050213232), we get a palindrome (36281418263).

The spelling of 23231205031 in words is "twenty-three billion, two hundred thirty-one million, two hundred five thousand, thirty-one".